IB ESS SL 6.1.1 Atmosphere Boundary Questions

Practise IB ESS SL 006.001.001 by applying atmosphere boundary concepts to environmental systems questions.

[Maximum number: 1]

Figure:Gas composition of the troposphere by volume

the tropospheric gas-composition chart shown above below is a pie chart showing the percentages (by volume) of gases in the troposphere.

Label gases A and B on the tropospheric gas-composition chart shown above above.

oxygen $/ \mathrm{O}_{2}$

B: nitrogen $/ \mathrm{N}_{2}$ ;

Both required to award [1].

Marking guidance:

Do not accept N or O.

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IB ESS SL 6.1.1 Atmosphere Boundary Questions question 1